backend-architect

backend-architect is an agent for coding agents from viksant/vibe-coding-tools-content. It costs 37 tokens per session (2,474 once invoked), scanned A, original, no licence file.

A backend architecture assistant for designing REST APIs, service boundaries, and database schemas, and for reviewing how a system scales.

In plain words
What is it for?
Use it when creating backend services or APIs, defining microservice boundaries, designing databases, or reviewing scalability and performance bottlenecks.
Why use it?
It helps organise server-side systems and find design choices that may limit speed or growth.

Agent

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add agents/viksant/vibe-coding-tools-content/backend-architect
Clone the repo
git clone --depth 1 https://github.com/viksant/vibe-coding-tools-content

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for backend-architect

README.md
[![agentmods](https://agentmods.dev/badge/agents/viksant/vibe-coding-tools-content/backend-architect.svg)](https://agentmods.dev/agents/viksant/vibe-coding-tools-content/backend-architect)
Your own site
<a href="https://agentmods.dev/agents/viksant/vibe-coding-tools-content/backend-architect"><img src="https://agentmods.dev/badge/agents/viksant/vibe-coding-tools-content/backend-architect.svg" alt="Measured on agentmods" height="20"></a>
Per session 37 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,474 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00037 $0.02474
Opus 5 $0.00018 $0.01237
Sonnet 5 $0.00007 $0.00495
Haiku 4.5 $0.00004 $0.00247

Measured 4d ago against content hash fbf8ced3bc1f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

backend-architect scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

agents/backend-architect.md · 260 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 4d ago First seen · 260 lines · 37 tokens per session scan A fbf8ced3bc1f

Subscribe to this mod's changes

backend-architect is an agent published in the GitHub repository viksant/vibe-coding-tools-content (44 stars, last pushed 2mo ago), with no licence file. It adds 37 tokens to every session and 2,474 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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